Machine for operating on shoe parts



Feb. 21, 1933. E. F. SCHMIDT MACHINE FOR OPERATING ON SHOE PARTS Filed Dec. 27, 1930 AVE/W0 2. M

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Turk Patented F eb. 21, 1933 UNITED STATES PATENT OFFICE ECKARD F. SCHMIDT, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY MACHINE FOR OPERATING ON SHOE PARTS Application filed December 27, 1930. Serial No. 505,107.

This invention relates to machines for operating upon shoe parts and more particularly to machines of the type disclosed in United States Letters Patent No. 643,455, granted February 13, 1900, upon an application filed in the name of Bayley, which illustrates a machine adapted for use in pounding shoe parts. A y

In completed shoes it is frequently desirable to have the exposed edge portions of certain parts of the upper present a finished appearance. One way of accomplishing this result is to fold over the marginal portions of the parts prior to their incorporation in the shoe. In order that the edges formed in the folding operation will present a pleasing appearance when assembled in the shoe, such edges are commonly flattened or thinned out by means of a machine of the type referred to, which comprises an anvil and a rapidly reciprocated hammer for beating blankssupported by the anvil.

An object of the present invention is to provide an improved machine of this kind which, without sacrificing any of the advantages of such machines as heretofore constructed, will be operable upon shoe-part blanks rapidly to produce especially compact edge portions.

To this end and as illustrated, the inven tion provides an anvil, a hammer, and a gage so constructed and arranged that it is operable to locate work positioned between the hammer and the anvil with the marginal portions of the work in operative position relatively to the striking face of the hammer. Preferably, the hammer is so shaped that the gage can be positioned centrally thereof with its work-engaging face in position to limit inward movement of the work presented between the anvil and the striking face of the hammer with the result that the force of blows from the hammer will be concentrated upon the marginal portions of work guided across the anvil by the gage. Preferably, mechanism is provided for moving the anvil and gage simultaneously relatively to the hammer in presenting work carried by the anvil to the hammer. As shown, this mechanism comprises means for mounting the anvil and gage for movement relatively to the frame of the machine, manually operable means-for moving the anvil relatively to the hammer, and a connection between the anvil and gage for moving the gage simultaneously with the anvil.

By the use of this construction work can be readily guided across the face of the anvil by the gage with the edge portions properly located in position to be operated upon by the hammer, the mounting of the anvil and gage permitting the forcing of the work against the hammer with varying amounts of pressure as required, depending upon the thickness of the work and the character of the material composing it. The location of the gage as indicated facilitates the rapid presentation of the work with the edge portions only in position to be operated upon by the hammer with the result that the blows of the hammer are concentrated upon such edge portions, making it possible to obtain accurate operation, resulting in work provided Wit uniform thinned edges.

Machines constructed as above set forth are well adapted to operate upon upper blanks the marginal portions of which have been folded over and sewed to linings. By concentrating the action of the hammer upon such marginal portions the upper and lining are firmly compacted and thinned out to present a finished appearance.

' Other objects and features of the invention will be apparent from the following description when taken in connection with the accompanying drawing and will be set forth in the claims. 7

In the drawing,

Fig. 1 is a perspective View, partly in sec tion, illustrating a machine embodying the. invention;

Fig. 2 is a view of the anvil, hammer and gage along section IIII of Fig. 1'; and i Fig. 3 is a detail view taken along section III-III of Fig. 2.

As shown in Fig. 1 of the drawing, the machine comprises an anvil 10 and an oscillatory hammer 12 adapted to, deliver blows in rapid succession upon edge portionsnof work, such as a shoe-part blank, positioned upon the anvil 10 and guided across the face thereof by a gage 14.

The anvil 10 comprises a head 16 having a stem 18 extending through a sleeve 20 which makes screw-threaded connection with the frame 22 of the machine. Below the head 16 is a cushion washer 24 and a collar 26 secured to the head 16 by means of studs 28, only one of which is shown. The lower portion of the collar 26 is provided with a series of vertically disposed flat surfaces, one of which is shown at 30, and a plurality of inclined surfaces 32 which lead up to the flat surfaces.

There are similar flat and inclined surfaces 34 and 36 respectively upon the upper end of the sleeve 20. The inclined surfaces 36 are co-operable with the corresponding surfaces 32 upon the collar 26 to produce an axial movement of the head 16 of the anvil when the stem 18 is turned, thus to provide for movement of the head of the anvil toward or away from the hammer 12, whereby work positioned upon the anvil can be presented to the hammer. Such movement of the head is arranged to be effected responsive to manual operation of a treadle. Accordingly, the lower portion of the stem 18 has secured to it a lug 38 having at one side thereof a slot 40 for receiving one end of a link 42 pivotally held in the slot by a pin 44. The other end of the link is connected to the arm of a bell crank 46, which makes connection with the treadle (not shown) by means of a treadle' rod 48. Upon operation of the treadle the stem 18 is turned with the result that the inclined surfaces 32 of the collar 26 slide along corresponding surfaces 36 of the sleeve 20, raising the head 16. A spring 50 the ends of which are connected to the frame and to a bracket 52 on link 42 respectively is normally operative to move the link 42 in a direction to force the head 16 downwardly into its lowermost position with the surfaces 30' engaging the surfaces 34 respectively. Thus the anvil can be positioned at the will of the operator heightwise of the hammer, as reuired to operate upon blanks of different t 'cknesses or in varying the pressure of the hammer upon the blanks. As shown in Figs. 2 and 3, the head 16 of the anvil has a frustoconical surface 54 upon the central portion of which is a cylindrical projection or boss 56 the upper surface 58 of which constitutes a support for the edge portions of the work which is to be operated upon by the hammer 12. The inclined surface 54 serves to guide blanks to the boss 56 in presenting the blanks for operation.

The hammer 12 (Fig. 1) is carried by an arm 60 mounted upon a pivot 62 on the frame 22, the arm being arranged to be continuously oscillated about its pivot 62 by an eccentric (not shown). The hammer 12 comprises a shank 64 slidably mounted in one end of the arm 60 and normally forced downwardly relatively to the arm by a stifi spring 65 which permits the hammer to yield slightly under pressure of the work, downward movement being limited by a washer 67 held against movement endwise of the shank 64 by a nut 69 threaded upon the outer end of the shank. Tension of the spring 65 can be adjusted by turning the nut in directions to raise or lower the shank within the arm. For further details of the construction and operation of the parts of the hammer thus far described, reference may be had to the aforementioned Letters Patent.

At its lower end the shank 64 has a comparatively fiat flange 66 which constitutes the striking portion of the hammer. The shank 64 and the flange 66 are cut away approximately along a plane extending at right angles to the axis of the pivot 62 to form an inner vertical wall 68, and are also cut away to form an inner vertical wall 70 extending approximately at right angles to the wall 68, thereby forming a recess or notch adapted for the reception of the gage 14. The lower surface of the flange 66 adjacent the wall 70, indicated by reference character 72 (Figs. 1 and 3), constitutes a striking face opposed to the work-supporting surface 58 of the anvil and is a greater area than said surface. The relative positions of the hammer, anvil and work positioned for operation are best illustrated in Figs. 2 and 3 which show a blank 7 4 having a fold 7 6 and the adjacent edge portion of a lining 77 positioned upon the work-supporting surface 58 below the striking face 72 of the hammer. Upon oscillation of the hammer 12, the striking face 72 cooperates with the surface 58 to flatten and thin out the edge portions of the blank along the fold.

The blank 74 is guided, as its fold 7 6 is fed manually across the surface 58, by the gage 14 which has a flat end surface 78 and a blank-engaging face 80. The gage is adapted to be positioned in the notch formed by the vertical walls 68 and 70 of the hammer with its surfaces 78 and 80 closely adjacent respectively to said walls. The rear portion 82 of the blank-engaging face 80 of the gage 14 is curved in a direction away from the plane of the wall 7 0 of the hammer so that a blank having re-entrant cut-away portions can be advanced past the gage without having the latter interfere with the feed of the blank. It is to be noted that the gage is located centrally of the striking face of the hammer and of the boss 56 with a portion of its work-engaging face 80 extending across the outer edges of the boss and of the striking face of the hammer. This construction provides means for limiting inward movement of the blank to be operated upon with the result thatonly the marginal portions of the blank can be positioned beneath the hammer upon the upper surface 58 of the boss.

The gage 14 has a shank 84 which is secured to a block 86 slidably mounted upon Ways 88 of a gage mounting 90. The block 86 is movable along the ways 88 by means of an adjusting screw 9:2 rotatably carried by an arm 94 on the block and making screwthreaded engagement with the mounting 90. The arrangement just referred to is such that the gage 14 can be moved laterally of the surface 58 of the anvil to space the blank engaging face 80 of the gage from the wall of the hami'ner, therebv to position the gage for locating the blank relatively to the striking face 72- of the hammer and for guiding it across the face of the anvil. The gage is held in adjusted position by a set-screw 96 carried at the top of the gage mounting 90 and arranged for frictional engagement with the block 86. It should be noted that the striking face of the hammer, when in its lowermost position, is parallel to the surface 58 of the anvil and is below the pivot 62. When the hammer moves upwardly away from the anvil the vertical wall 70 will swing outwardly from the work-engaging face of the gage. Furthermore, the wall 68 of the hammer extends at right angles to the axis of the pivot 62, and the wall78 of the gage is parallel to it. Consequently, the hammer is free to oscillate about the pivot without interfering with the gage.

The gage 14 is supported for vertical movement by a shaft or stem 98 secured to the lower portion of the mounting and slidably mounted in a lug 100 forming part of the frame of the machine. The stem 98 is keyed to the lug 100 to prevent turning of the mounting relatively thereto. A spring 102, surrounding the stem 98 and engaging the bottom of a recess 104 on the lug 100 and a collar 106 on the stem, operates normally to force the stem 98 and consequently the gage 14 downwardly.

Mechanism is provided for producing simultaneously movement of the gage 14 and anvil 10 heightwise of the hammer 12, so that the work can be located on the anvil in engagement with the gage and can be forced against the hammer with the edge portions of he work in operative position relatively thereto. This mechanism comprises a plate 108 carried by the lug 38 and underlying the stem 98, connection between the stem and plate being made by a nut 110 carried by the stem, the nut being adj ustable to regulate the tension of the spring 102. The spring 102 is operative to maintain contact between the nut 110 and the plate 108. The plate 108 is of such width that a portion thereof will always be in contact with the nut 100 within the limits of the rotation of the plate with the lug 38. It will be apparent that, as the plate 108 is rotated through operation of the treadle rod 48, in raising the anvil the plate 108 Wlll be raised with the anvil, and, since the plate is in engagement with the stem 98, the gage 14 which is operatively connected to the stem will also be raised through the same distance. Then the anvil is lowered, the plate 108 likewise will be lowered and the spring 102 will force the stem 98 and gage 14 downwardly with it. Consequently, the gage and the anvil are always maintained in contact with each other, that is, with the lower surface of the gage 14 in contact with the surface 58 of the anvil. It is to be noted that the mounting of the gage above described is such that the work-engaging face 80 will be maintained in the same vertical plane regardless of move- 3 ment of the gage, and consequently that the rotation of the anvil as it is moved toward the hammer to present the work thereto will not affect the locating or guiding of the edges of the work relatively to the striking face of the hammer.

In the operation of the machine, a shoepart blank, such as a quarter, having folded marginal portions is presented between the anvil 16 and the oscillating hammer 12 with the blank positioned upon the surface 58 of the anvil and in engagement with the face 80 of the gage 14 which locates the marginal portions of the blank laterally in position to be operated upon by the striking face 72 of the hammer which delivers blows in rapid succession upon such portions of the blank to form compact edges. The blank is advanced manually past the face 80 of the gage which guides the blank relatively to the striking face of the hammer as successive edge portions of the blank are operated upon. The force of the blows of the hammer during operation upon the blank to produce the desired degree of compactness is regulated by adjusting the position of the anvil and gage'heightwise of the hammer, as required, through operation of the treadle rod 48. Since inward movement of the blank over the surface 58 of the anvil is so limited by the gage 14 that only the marginal portions of the blank are operated upon, the blows of the hammer are concentrated upon such portions thereby to produce a blank having compact thin edges, without disturbing other portions of the blank.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. A machine for operating upon shoe parts, comprising a hammer having a striking face, an anvil, and a gage positioned upon the anvil adjacent to the striking face of the hammer for locating relatively to the striking face marginal portions of a blank positioned between the hammer and the anvil.

2. A machine for operating upon shoe parts, comprising an anvil having a worksupporting surface, a hammer havinga striking face opposed to the work-supporting surface of the anvil, and a gage positioned centrally of the striking face of the hammer for limiting inward movement of work presented between the anvil and said striking face.

3. A machine for operating upon shoe parts, comp-rising an anvil having a worksupporting surface, a hammer having a striking face opposed to the surface of the anvil, and a gage having a portion thereof located centrally of the anvil and hammer and provided with a work-engaging face for limiting inward movement of a blank presented between the anvil and hammer.

4. A machine for operating upon shoe parts, comprising an anvil having a worksupporting surface,a hammer having a str1king face opposed to that of the anvil, and a gage positioned upon the surface of the anvil and having a work-engaging face a portion of which lies within the periphery of the surface of the anvil for guiding across the surface of the anvil a blank presented between the anvil and hammer.

5. A machine for operating upon shoe parts, comprising an anvil having a worksupporting surface, a gage having portions thereof overlying central portions of said surface for limiting lateral movement of a blank relatively to said surface, and an oscillatory hammer having a striking face for operating upon portions of a blank positioned between the hammer and said surface.

6. A machine for operating upon shoe parts, comprising an anvil, an oscillatory hammer having a striking face having therein a recess, and a gage positioned in the recess for locating relatively to the striking face of the hammer marginal portions of a blank positioned upon the anvil.

7. A machine for operating upon shoe parts, comprising an anvil, a hammer having a striking face for beating edges of a blank positioned between the anvil and hammer and having a recess therein, and a gage associated with the anvil and extending into the recess in the hammer for locating marginal portions of the blank in operative position relatively to the striking face ofthe hammer.

8. A machine for operating upon shoe parts, comprising an anvil having a work supporting surface, a hammer having a striking portion opposed to the surface of the anvil and having therein a notch extending approximately to the central portion of said striking portion, and a gage overlying the anvil and entering the notch in the hammer for locating a blank upon the anvil with marginal portions of the blank in operative position relatively to the striking portion of the hammer.

9. A machine for operating upon shoe parts, comprising an anvil, an oscillatory hammer having a striking face opposed to the anvil and having therein a notch, a gage extending across the anvil and into said notch for locating relatively to said face the marginal portions of a blank positioned upon the anvil, and means for adjusting the position of the gage laterally of the striking face of the hammer.

10. A machine for operating upon shoepart blanks, comprising an anvil having a work-supporting face, an oscillatory hammer having a side wall extending perpendicularly to the face of the anvil when the hammer is in operative position relatively to work positioned upon the anvil and terminating in a striking face which extends parallel to the face of the anvil when the hammer is in said operative position, and a gage mounted upon the face of the anvil for locating edge portions of the work relatively to the side wall of the hammer.

11. A machine for operating upon shoe parts, comprising an anvil, an oscillatory hammer having a striking face and an inner wall substantially perpendicular to the striking face, and a gage located upon the anvil and having a work-engaging face positioned adjacent to said Wall of the hammer.

12. A machine for operating upon shoe parts, comprising an anvil having a worksupporting surface, an oscillatory hammer having a striking face opposed to the supporting surface, and a gage located centrally of the hammer and said supporting surface and having a work-engaging portion extending adjacent to the striking face of the hammer and across the periphery of said supporting surface.

13. A machine for operating upon shoe parts, comprising an oscillatory hammer, an anvil, a gage for locating shoe-part blanks with the edge portions thereof in operative position relatively to the hammer, and means for moving the anvil and gage simultaneously heightwise of the hammer.

14. A machine for operating upon shoe parts, comprising an anvil having a flat work-supporting surface and an inclined surface for guiding work to the work-supporting surface, a gage located upon the worksupporting surface for guiding the work across said surface, and an oscillatory hammer for operating upon work positioned upon said surface.

15. A machine for operating upon shoe parts, comprising an oscillatory hammer having a striking face, an anvil, a gage for 10- cating relatively to the striking face edge portions of a blank positioned between the hammer and the anvil, and means for moving the anvil and the gage in a direction heightwise of the striking face of the hammer.

16. A machine for operating upon shoe parts, comprising an anvil having a worksupporting surface, an oscillatory hammer having a striking face opposed to the supporting surface of the anvil, a gage for positioning work with the edges thereof 10- cated in operative position relatively to the striking face of the hammer, and manually operable means for presenting the Work to the hammer While it is located in position upon the anvil by the gage.

17. A machine for operating upon shoe parts, comprising a frame, a hammer mounted for oscillation in the frame, an anvil, a gage for locating relatively to the hammer Work positioned upon the anvil, means for mounting the anvil and gage in the frame for movement relatively thereto, means for moving the anvil heightwise of the hammer, and an operative connection between the anvil and the gage for moving the gage simultaneously with the anvil heightwise of the hammer.

18. A machine for operating upon shoe parts, comprising a frame, a hammer mounted for oscillation in the frame, an anvil slidably mounted in the frame, a gage for locatin relatively to the hammer Work positioned bet-ween the anvil and hammer, means for slidably mounting the gage in the frame, manually operable means for moving the anvil toward the hammer for presenting the Work thereto, and means for moving the gage simultaneously With the anvil.

In testimony whereof I have signed my name to this specification.

ECKARD F. SCHMIDT. 

